A comment about the figure at 2'18" : I had some troubles when I activated the flaps
- 1st trail with elevator mixed with flaps as written in the manual (2.5mm up): the plane goes up.
- 2sd trail with elevator mixed with flaps 1mm down. You can see the result on the video at 2'18": a kind of roll over. It's the reason I don't use them for the landing and had some stress for the landing.

I had just to trim (a little bit) the elevator.
The problem with the flaps seems fixed (less stroke for the flaps and 1mm elevator down with the flaps open)
I had just to take time to make the 4th flight to try this and to land more slowly...